# [ref_impl_eiffel] [748] Upgrade invariants in C_DATE, etc types.

**Category:** [Reference Implementation: Eiffel (archive)](https://discourse.openehr.org/c/reference-implementation-eiffel-archive/161)
**Created:** 2008-11-14 11:45 UTC
**Views:** 5
**Replies:** 0
**URL:** https://discourse.openehr.org/t/ref-impl-eiffel-748-upgrade-invariants-in-c-date-etc-types/13102

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## Post #1 by @svn1

Revision: 748
Author:   thomas\.beale

Log Message:

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**Canonical:** https://discourse.openehr.org/t/ref-impl-eiffel-748-upgrade-invariants-in-c-date-etc-types/13102
**Original content:** https://discourse.openehr.org/t/ref-impl-eiffel-748-upgrade-invariants-in-c-date-etc-types/13102